path: root/build/util/build_util_main.scons

# This file is generated; do not edit.

__doc__ = '''
Wrapper configuration for building this entire "solution,"
including all the specific targets in various *.scons files.
'''

import os
import sys

import SCons.Environment
import SCons.Util

def GetProcessorCount():
  '''
  Detects the number of CPUs on the system. Adapted form:
  http://codeliberates.blogspot.com/2008/05/detecting-cpuscores-in-python.html
  '''
  # Linux, Unix and Mac OS X:
  if hasattr(os, 'sysconf'):
    if os.sysconf_names.has_key('SC_NPROCESSORS_ONLN'):
      # Linux and Unix or Mac OS X with python >= 2.5:
      return os.sysconf('SC_NPROCESSORS_ONLN')
    else:  # Mac OS X with Python < 2.5:
      return int(os.popen2("sysctl -n hw.ncpu")[1].read())
  # Windows:
  if os.environ.has_key('NUMBER_OF_PROCESSORS'):
    return max(int(os.environ.get('NUMBER_OF_PROCESSORS', '1')), 1)
  return 1  # Default

# Support PROGRESS= to show progress in different ways.
p = ARGUMENTS.get('PROGRESS')
if p == 'spinner':
  Progress(['/\r', '|\r', '\\\r', '-\r'],
           interval=5,
           file=open('/dev/tty', 'w'))
elif p == 'name':
  Progress('$TARGET\r', overwrite=True, file=open('/dev/tty', 'w'))

# Set the default -j value based on the number of processors.
SetOption('num_jobs', GetProcessorCount() + 1)

# Have SCons use its cached dependency information.
SetOption('implicit_cache', 1)

# Only re-calculate MD5 checksums if a timestamp has changed.
Decider('MD5-timestamp')

# Since we set the -j value by default, suppress SCons warnings about being
# unable to support parallel build on versions of Python with no threading.
default_warnings = ['no-no-parallel-support']
SetOption('warn', default_warnings + GetOption('warn'))

AddOption('--mode', nargs=1, dest='conf_list', default=[],
          action='append', help='Configuration to build.')

AddOption('--verbose', dest='verbose', default=False,
          action='store_true', help='Verbose command-line output.')


#
sconscript_file_map = dict(
    lastchange = 'lastchange.scons',
)

class LoadTarget:
  '''
  Class for deciding if a given target sconscript is to be included
  based on a list of included target names, optionally prefixed with '-'
  to exclude a target name.
  '''
  def __init__(self, load):
    '''
    Initialize a class with a list of names for possible loading.

    Arguments:
      load:  list of elements in the LOAD= specification
    '''
    self.included = set([c for c in load if not c.startswith('-')])
    self.excluded = set([c[1:] for c in load if c.startswith('-')])

    if not self.included:
      self.included = set(['all'])

  def __call__(self, target):
    '''
    Returns True if the specified target's sconscript file should be
    loaded, based on the initialized included and excluded lists.
    '''
    return (target in self.included or
            ('all' in self.included and not target in self.excluded))

if 'LOAD' in ARGUMENTS:
  load = ARGUMENTS['LOAD'].split(',')
else:
  load = []
load_target = LoadTarget(load)

sconscript_files = []
for target, sconscript in sconscript_file_map.iteritems():
  if load_target(target):
    sconscript_files.append(sconscript)


target_alias_list= []

conf_list = GetOption('conf_list')
if conf_list:
    # In case the same --mode= value was specified multiple times.
    conf_list = list(set(conf_list))
else:
    conf_list = ['Debug']

sconsbuild_dir = Dir('../../sconsbuild')


def FilterOut(self, **kw):
  kw = SCons.Environment.copy_non_reserved_keywords(kw)
  for key, val in kw.items():
    envval = self.get(key, None)
    if envval is None:
      # No existing variable in the environment, so nothing to delete.
      continue

    for vremove in val:
      # Use while not if, so we can handle duplicates.
      while vremove in envval:
        envval.remove(vremove)

    self[key] = envval

    # TODO(sgk): SCons.Environment.Append() has much more logic to deal
    # with various types of values.  We should handle all those cases in here
    # too.  (If variable is a dict, etc.)


non_compilable_suffixes = {
    'LINUX' : set([
        '.bdic',
        '.css',
        '.dat',
        '.fragment',
        '.gperf',
        '.h',
        '.hh',
        '.hpp',
        '.html',
        '.hxx',
        '.idl',
        '.in',
        '.in0',
        '.in1',
        '.js',
        '.mk',
        '.rc',
        '.sigs',
        '',
    ]),
    'WINDOWS' : set([
        '.h',
        '.hh',
        '.hpp',
        '.dat',
        '.idl',
        '.in',
        '.in0',
        '.in1',
    ]),
}

def compilable(env, file):
  base, ext = os.path.splitext(str(file))
  if ext in non_compilable_suffixes[env['TARGET_PLATFORM']]:
    return False
  return True

def compilable_files(env, sources):
  return [x for x in sources if compilable(env, x)]

def GypProgram(env, target, source, *args, **kw):
  source = compilable_files(env, source)
  result = env.Program(target, source, *args, **kw)
  if env.get('INCREMENTAL'):
    env.Precious(result)
  return result

def GypTestProgram(env, target, source, *args, **kw):
  source = compilable_files(env, source)
  result = env.Program(target, source, *args, **kw)
  if env.get('INCREMENTAL'):
    env.Precious(*result)
  return result

def GypLibrary(env, target, source, *args, **kw):
  source = compilable_files(env, source)
  result = env.Library(target, source, *args, **kw)
  return result

def GypLoadableModule(env, target, source, *args, **kw):
  source = compilable_files(env, source)
  result = env.LoadableModule(target, source, *args, **kw)
  return result

def GypStaticLibrary(env, target, source, *args, **kw):
  source = compilable_files(env, source)
  result = env.StaticLibrary(target, source, *args, **kw)
  return result

def GypSharedLibrary(env, target, source, *args, **kw):
  source = compilable_files(env, source)
  result = env.SharedLibrary(target, source, *args, **kw)
  if env.get('INCREMENTAL'):
    env.Precious(result)
  return result

def add_gyp_methods(env):
  env.AddMethod(GypProgram)
  env.AddMethod(GypTestProgram)
  env.AddMethod(GypLibrary)
  env.AddMethod(GypLoadableModule)
  env.AddMethod(GypStaticLibrary)
  env.AddMethod(GypSharedLibrary)

  env.AddMethod(FilterOut)

  env.AddMethod(compilable)


base_env = Environment(
    tools = ['ar', 'as', 'gcc', 'g++', 'gnulink', 'chromium_builders'],
    INTERMEDIATE_DIR='$OBJ_DIR/${COMPONENT_NAME}/_${TARGET_NAME}_intermediate',
    LIB_DIR='$TOP_BUILDDIR/lib',
    OBJ_DIR='$TOP_BUILDDIR/obj',
    SCONSBUILD_DIR=sconsbuild_dir.abspath,
    SHARED_INTERMEDIATE_DIR='$OBJ_DIR/_global_intermediate',
    SRC_DIR=Dir('../..'),
    TARGET_PLATFORM='LINUX',
    TOP_BUILDDIR='$SCONSBUILD_DIR/$CONFIG_NAME',
    LIBPATH=['$LIB_DIR'],
)

if not GetOption('verbose'):
  base_env.SetDefault(
      ARCOMSTR='Creating library $TARGET',
      ASCOMSTR='Assembling $TARGET',
      CCCOMSTR='Compiling $TARGET',
      CONCATSOURCECOMSTR='ConcatSource $TARGET',
      CXXCOMSTR='Compiling $TARGET',
      LDMODULECOMSTR='Building loadable module $TARGET',
      LINKCOMSTR='Linking $TARGET',
      MANIFESTCOMSTR='Updating manifest for $TARGET',
      MIDLCOMSTR='Compiling IDL $TARGET',
      PCHCOMSTR='Precompiling $TARGET',
      RANLIBCOMSTR='Indexing $TARGET',
      RCCOMSTR='Compiling resource $TARGET',
      SHCCCOMSTR='Compiling $TARGET',
      SHCXXCOMSTR='Compiling $TARGET',
      SHLINKCOMSTR='Linking $TARGET',
      SHMANIFESTCOMSTR='Updating manifest for $TARGET',
  )

add_gyp_methods(base_env)

for conf in conf_list:
  env = base_env.Clone(CONFIG_NAME=conf)
  SConsignFile(env.File('$TOP_BUILDDIR/.sconsign').abspath)
  for sconscript in sconscript_files:
    target_alias = env.SConscript(sconscript, exports=['env'])
    if target_alias:
      target_alias_list.extend(target_alias)

Default(Alias('all', target_alias_list))

help_fmt = '''
Usage: hammer [SCONS_OPTIONS] [VARIABLES] [TARGET] ...

Local command-line build options:
  --mode=CONFIG             Configuration to build:
                              --mode=Debug [default]
                              --mode=Release
  --verbose                 Print actual executed command lines.

Supported command-line build variables:
  LOAD=[module,...]         Comma-separated list of components to load in the
                              dependency graph ('-' prefix excludes)
  PROGRESS=type             Display a progress indicator:
                              name:  print each evaluated target name
                              spinner:  print a spinner every 5 targets

The following TARGET names can also be used as LOAD= module names:

%s
'''

if GetOption('help'):
  def columnar_text(items, width=78, indent=2, sep=2):
    result = []
    colwidth = max(map(len, items)) + sep
    cols = (width - indent) / colwidth
    if cols < 1:
      cols = 1
    rows = (len(items) + cols - 1) / cols
    indent = '%*s' % (indent, '')
    sep = indent
    for row in xrange(0, rows):
      result.append(sep)
      for i in xrange(row, len(items), rows):
        result.append('%-*s' % (colwidth, items[i]))
      sep = '\n' + indent
    result.append('\n')
    return ''.join(result)

  load_list = set(sconscript_file_map.keys())
  target_aliases = set(map(str, target_alias_list))

  common = load_list and target_aliases
  load_only = load_list - common
  target_only = target_aliases - common
  help_text = [help_fmt % columnar_text(sorted(list(common)))]
  if target_only:
    fmt = "The following are additional TARGET names:\n\n%s\n"
    help_text.append(fmt % columnar_text(sorted(list(target_only))))
  if load_only:
    fmt = "The following are additional LOAD= module names:\n\n%s\n"
    help_text.append(fmt % columnar_text(sorted(list(load_only))))
  Help(''.join(help_text))